Property, Plant and Equipment (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Property, Plant and Equipment
Property, plant and equipment, gross	$ 12,603,880	$ 12,329,080
Less: accumulated depreciation and amortization	(9,705,152)	(9,302,980)
Property, Plant and Equipment, Net	2,898,728	3,026,100	$ 3,348,498
Depreciation	644,900	663,100	689,200
Repair and maintenance expense	228,200	202,500	$ 153,900
Land
Property, Plant and Equipment
Property, plant and equipment, gross	32,074	22,672
Buildings
Property, Plant and Equipment
Property, plant and equipment, gross	140,330	134,063
Drilling rigs and related equipment
Property, Plant and Equipment
Property, plant and equipment, gross	11,959,989	11,722,404
Oilfield hauling and mobile equipment
Property, Plant and Equipment
Property, plant and equipment, gross	233,920	233,708
Other machinery and equipment
Property, Plant and Equipment
Property, plant and equipment, gross	$ 237,567	$ 216,233